Hydroforming die is a specialized type of cold forming that uses a high pressure hydraulic fluid to press room temperature tubes into a die. The tube hydroforming process consists of pre-bending a metallic tube and placing this pre-shaped tube inside a ...

Longda has a complete set of manufacturing and testing equipments, which are the most advanced in the technical tube industry .Meanwhile, we have established an effective quality management system with strong execution. We manufacture and control the ...